DETAILSThe Ratio?MIPS is a no nonsense helmet that boasts the features found on Giro??s premium helmets, yet at a more accessible price. Beneath the sleek silhouette, you??ll find the adjustability of an In Form fit system, Thermostat Control adjustable venting and compatibility with aftermarket audio systems by Outdoor Tech. The Ratio is also available with MIPS??which can offer more protection in certain impacts by redirecting impact energy.SPECIFICATIONSConstructionMIPS ?? Multi-Directional Impact Protection System, Hard Shell ConstructionFit SystemIn Form Fit System, Vertical TuningVentilationThermostat Control adjustable venting, Stack ventilationFeaturesCompatible with aftermarket Giro audio systems by Outdoor Tech, Seamless Compatibility with all Giro gogglesCertificationCE EN1077FEATURESSTACK VENT?Our Stack Vent was developed based on research showing the majority of the warm air that can cause fogging exhausts from the center top vent of the goggle. Aligning the Stack Vent in the helmet with the center vent of your goggles helps to keep them clear and fog free while maintaining total helmet and goggle integration.STACK VENT?SEAMLESS COMPATIBILITYMIPSIN FORM? FIT SYSTEMHARD SHELL CONSTRUCTIONTHERMOSTAT? CONTROL